echo 64 > /sys/block/sdX/queue/max_sectors_kb
echo 512 > /sys/block/sdX/queue/nr_requests
blockdev --setra 2048 /dev/sdX
is what i've set. I'm running XFS on a 8x1TB raid5 on a 3ware
9550SX-16ML, dual opteron 265 with 5gb ram.
df -h:
/dev/sdb1 6.4T 3.9T 2.6T 61% /files
df -ih:
/dev/sdb1 6.4G 20M 6.3G 1% /files
I backed down to 2.6.28.7, and the system has been stable for almost 2
weeks... crashes in a day or two under 2.6.29.x Sounds like some sort of
regression in 2.6.29.x with XFS to me.
The system is a backuppc server, so there's a VERY heavy disk load
overnight as it does backups, with millions of hardlinks on the
filesystem.
Mike
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